SUPPRESSION OF DETERMINISTIC DIFFUSION BY NOISE

被引:9
|
作者
REIMANN, P
机构
[1] Limburgs Universitair Centrum
来源
PHYSICAL REVIEW E | 1994年 / 50卷 / 02期
关键词
D O I
10.1103/PhysRevE.50.727
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
A one-dimensional discrete-time dynamics near the onset of deterministic diffusion additively coupled to weak Gaussian white noise is studied. The diffusion coefficient is related to the escape rate out of an interval and a method for the calculation of this rate is introduced which, unlike previous investigations, fully takes into account all relevant escape paths. It is found that the diffusion coefficient of the deterministic dynamics may be considerably reduced by the noise in agreement with numerical simulations. It is shown that certain fundamental problems in the concept of deterministic diffusion without noise do not affect the validity of our result.
引用
收藏
页码:727 / 735
页数:9
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